Bacteria ; drug effects ; Communicable Diseases, Emerging ; epidemiology ; microbiology ; Drug Resistance, Bacterial

Diseases in Twins ; Female ; Gene Rearrangement ; Humans ; Infant ; Male ; Myeloid-Lymphoid Leukemia Protein ; genetics ; Oncogene Proteins, Fusion ; genetics ; Polymerase Chain Reaction ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; genetics ; pathology ; Twins, Monozygotic

The clinical data of 109 patients with rhegmatogenous retinal detachment were retrospectively analyzed and the relationships among retinal detachment，refraction and the shapes of hole in different age groups discussed. The results showed that myopia was more commonly seen in the patients less than 40 years old and the occurrence of myopia was gradually decreased in the patients over 40 years old. Round hole was more commonly seen in the patients less than 40 years old and horseshoe-shaped tears were more often found in the age group of over 40 years old.

A miniaturized potentiometric label-free immunosensor based on the standard complementary metal-oxide-semiconduction transistor(CMOS) process and micro fabrication technique was developed to monitoring diabetes, which could detect the concentrations of glycated hemoglobin (HbA1c) and hemoglobin. This immunosensor includes a micro field-effect transistor based sensor chip integrated with signal readout circuit and a disposable probe electrode. The micro sensor chip was designed by our lab and fabricated by Chartered Semiconductor, Singapore. The disposable probe electrode, which was integrated with sensitive electrodes array and micro reaction pool, was deposited on polyester plastic based on micro fabrication techniques. Antibody of HbA1c and hemoglobin were immobilized on the electrode based on self assemble monolayer and gold nanoparticles. The characteristics of the electrode during modification were studied by cyclic voltammetry and electrochemical impedance technique. The response characteristic of the immunosensor was detected. HbA1c from 4 to 24 mg/L and hemoglobin from 60 to 180 mg/L can be detected by this immunosensor.

Tongue acupuncture is originated from the theory of TCM through scientific research. Forty points on the tongue are discovered that correspond to organs and certain parts of the body. The findings indicate that the patient with encephalopathy is accompanied by the pathological swelling sublingual fold. The sublingual fold is correlated with spinal and limbs lesions. Tongue acupuncture provides new approaches to treat many diseases. This paper introduces the determined points, manipulation skills and the theory of tongue acupuncture. The applications of PET, fMRI and VEP in tongue acupuncture are covered in this paper.
Acupuncture Therapy ; Humans ; Tongue ; anatomy & histology

Objective To evaluate the value of echocardiography in diagnosing infective endocarditis (IE) in children. Methods The shape, size, echogenicity, distribution of vegetations and valvular function of the heart were observed by transthoracic echocardiography (TTE) in 30 patients with suspected IE. We correlated TTE ifndings with the results of hemoculture and serologic test. Results Vegetations were observed in all patients by echocardiography:seven patients with tricuspid valve vegetations, two with mitral valve vegetations, three with pulmonary valve vegetations, three with main pulmonary artery vegetations, three with aortic valve vegetations, two with aortic valve abscess, and two with vegetations in right atrium. After anti-infection therapy, the size of vegetations in iffteen patients became smaller and the less echogenic than before. Vegetations disappeared in two patients. Vegetation was recurrent repeatedly in one case. Ten patients recovered after operation. Two severe cases died. Five patients underwent TTE again one week after the previous negative TTE. Of them, echocardiography demonstrated vegetations in three cases. However, no vegetations were found in rest two cases because antibiotics had been used at early stage. In addition, echocardiography demonstrated one patient with mitral valve vegetation. But the lesion was ifnally conifrmed to be operating suture. The sensitivity and specificity of TTE in detecting vegetations were 88.0% and 80.0%, respectively. Blood cultures were positive in twenty-seven cases and were negative in three cases. Conclusions The early diagnosis of IE is important to improve patient′s prognosis. It takes a long time in organism cultivation before achieving the clinical diagnosis. TTE can help obtain an early diagnosis stage of IE, and provide the assessment of size and location of vegetation. It plays an important role in treatment and prognosis prediction.

OBJECTIVETo study the effects of Citalopram on the mRNA expression of bax and bel-2 in frontal cortical neurons and on cell apoptosis of rats after stress.

METHODSTwenty-four healthy male SD rats were randomly divided into three groups (n = 8). The control group did no receive any treatment, the stress group was subject to stress and given normal saline and experimental group was given Citalopram irrigation stomach after stress. Rats were forced to swim to establish chronic stress model (15 min/d, 4 weeks), bax, bcl-2 mRNA expression were tested by in situ hybridization technique (ISH), TUNEL assay was used to determine cell apoptosis, Nikon image analysis software were used to measure the number of positive cells in each index.

RESULTSCompared with the control group, the stress group showed a larger number of bax mRNA expressing cells( P < 0.01), a smaller number of bcl-2 mRNA expressing cells (P < 0.01), and the staining intensity of positive cells was significantly reduced( P < 0.01). Compared with the stress group, the experiment group showed more reduced number of bax mRNA positive cells( P < 0.01) and significantly increased bcl-2 mRNA positive cells( P < 0.05), a small amount of positive cells were found, compared with that in the stress group, nuclear condensation in the experimental group was reduced significantly and the staining was obviously weaker( P < 0.01).

CONCLUSIONCitalopram significantly antagonizes bax mRNA and potentiatesbcl-2 mRNA protein expression and inhibits apoptosis of rat prefrontal cortical neurons caused by chronic stress, which might be one possible mechanism of Citalopram for prevention and treatment of psychosis caused by chronic stress.

Animals ; Apoptosis ; Citalopram ; pharmacology ; Male ; Neurons ; drug effects ; metabolism ; Prefrontal Cortex ; cytology ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; RNA, Messenger ; Rats ; Rats, Sprague-Dawley ; Stress, Physiological ; bcl-2-Associated X Protein ; metabolism

AIM: To detect whether N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) inhibits epithelial-mes-enchymal transition in A549 cells induced by TGF-β1 through suppressing the expression of heat shock protein 27 (HSP27) and zinc finger proteins Snail (including SNAI1and SNAI2) which ultimately inhibited the deposition of type I and type III collagens.METHODS:The colocalizations of HSP27 and SNAI1/SNAI2 respectively on A549 alveolar epi-thelial cells induced by TGF-β1 were measured by confocal microscopy .The expression of HSP27, SNAI1 and SNAI2 at mRNA level was detected by real-time PCR.Western blotting analysis was used to detect the expression of HSP 27, SNAI1 and SNAI2 on epithelial-mesenchymal transition in A549 cells induced by TGF-β1 and also the deposition of type I and type III collagens in A549 cells transfected with HSP27shRNA prior to TGF-β1 stimulation.RESULTS: Compared with control group, TGF-β1 increased the expression of HSP27, SNAI1, SNAI2, type I and type III collagen, which decreased significantly followed by Ac-SDKP intervention.The expression of SNAI1, type I and type III collagen decreased signifi-cantly after transfected with HSP27shRNA in A549 cells, which had the similar effect on Ac-SDKP intervention.CON-CLUSION:Ac-SDKP inhibits the transition of cultured A 549 cells to myofibroblasts and attenuates collagen synthesis by suppressing the expression of HSP 27 and zinc finger proteins SNAI 1 and SNAI2.

Objective To investigate the pathogenesis of gallbladder chaotic dynamics after partial gastrec-tomy. Methods 140 cases operated by partial gastrectomy after 6 months were randomly examined, they in-cluded one group of 40 cases by Billroth type and the other 100 cases by Eiselsberg type. The ultrasonograph was applied to evaluate the function of gallbladder dynamics and radio-immunity method to determine the content of CCK at the time of having no food and 30 minutes after med. Results BV and RV of Eiselsberg group were bigger than Billroth Ⅰ obviously P<0.05. Gallbladder contraction rate displayed not well obvi-ously as too. The plasm level of CCK had no manifested distinctions in empty stomach cases of the 2 groups, but the increasing gradient plasm level of CCK in Billroth Ⅰ exceeded Eiselsberg type. Conclusions The pathogenesis of gallbladder chaotic dynamics after partial gastrectomy was correlated with the alterative type of partial gastrectomy, the reduction of CCK plasm level, the damage of anterior vagal trunk hepatic branches during the operations and so on led to the disorder of gallbladder emptying and induced cholecystolithiasis.

OBJECTIVETo study the effect of nano-SiO2 on spatial learning and memory.

METHODSTwenty-four male rats were randomly divided into 3 groups: control group (C group), low dose group (L group) and high dose group (H group). The rats were intragastrically administrated with nanometer particles at 25 and 100 mg/kg body weight every day for 4 weeks. After exposure, the ability of learning and memory of rats was tested by Morris water maze, and electrophysiological brain stereotactic method was used to test long-tear potentiation (LTP) in dentate gyrus (DG) of the rats.

RESULTSThe increase rate of body weight in H group was reduced significantly compared with C group ( P < 0.05). In the space exploration experiment of Morris water maze test, the escape latency of H group was longer than that of C group (P < 0.05). The rats of H group spent less time in finding the target quadrant (P < 0.05) . The rate of LP induction of H group was significantly lower than that of C group (P < 0.05). After high fre quency stimulation (HFS), The changes of amplitude of population spike (PS) of L group and H group were lower than those of C group significantly (P < 0.05, P < 0.01).

CONCLUSIONNano-SiO₂may result in impairment of spatial learning and memory ability by reducing the rate of LTP induction and the increase of PS in hippocampus.

Animals ; Dentate Gyrus ; drug effects ; Long-Term Potentiation ; drug effects ; Male ; Maze Learning ; drug effects ; Memory ; drug effects ; Nanoparticles ; adverse effects ; Rats ; Silicon Dioxide ; adverse effects ; Spatial Learning ; drug effects